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You got the fuel lines reversed?
I have my FPR and boost gauge T'd off the small brass FPR nipple on the back of the lower manifold.
Did you cap the nipple on the front/side of the lower manifold behind the throttle body (on right side if looking at it) (it points directly at the block)
I don't know what that hardline thing is, but I suspect the is the vent for the fuel tank which is not vacuum.
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